A power-off locking lifting device for ionizing radiation testing

Abstract

The present invention relates to the technical field of radiation testing in ionizing radiation places, and in particular to a power-off locking lifting device for ionizing radiation testing, comprising a support base for ionizing radiation testing, and a lifting device installed on the support base, wherein a support platform for installing a test object is installed on the top of the lifting device. The present invention uses a one-way movement and reverse control method to keep a first plate free to move up and down when power is on, and lock the position of the first plate when power is off, so that the lifting mechanism is locked, and can prevent the platform from falling due to the deadweight of the support platform under the premise of reducing electromagnetic interference, thereby improving the accuracy of the test.

Description

Technical Field

[0001] The invention relates to the technical field of radiation testing in ionizing radiation places, and in particular to a power-off locking lifting device for ionizing radiation testing. Background Art

[0002] In ionizing radiation testing devices, the proportional relationship between the radiation dose rate and the distance from the radiation source is usually tested by adjusting the position of the object under test and the X-ray standard radiation device. In actual testing, the position of the object under test needs to be constantly adjusted to achieve testing at different positions. The automated equipment used to move the object under test includes a drive motor or electromagnetic device for driving the object under test to move, which will produce weak electromagnetic interference to the ionizing radiation test. The conventional method to reduce such electromagnetic interference is to cut off the power supply of the motor or electromagnetic device. When the object under test moves to the specified position, the power supply of the motor is cut off to reduce electromagnetic interference and optimize the detection effect.

[0003] However, after the power is cut off, the automated equipment used to move the object under test will move according to the device's own properties. For example, after the object under test is adjusted to a specified height, it will drop slightly due to the weight of the device or the object under test, affecting the accuracy of the test. Therefore, in order to keep the object under test stable during the test, it is necessary to design a lifting device that can remain locked when the power is off. Summary of the invention

[0004] In view of the above problems, the present invention proposes a power-off locking lifting device for ionizing radiation testing, comprising a support base for ionizing radiation testing, and a lifting device installed on the support base, wherein a support platform for mounting a test object is installed on the top of the lifting device; the lifting device comprises: a plurality of support rods, one end of which is fixed to the upper end surface of the support base and the other end of which is fixedly installed with a fixing plate; a first flat plate is slidably installed on the support rod, a plurality of guide rods are fixedly installed on the upper end surface of the first flat plate, and the other end of the guide rod is fixed to the lower end surface of the support platform;

[0005] The support base is provided with a first driving mechanism for driving the first plate to move along the support rod;

[0006] A guide locking mechanism is provided between the support base and the fixed plate, and a magnetic locking mechanism is provided on the upper end surface of the first flat plate in coordination with the guide locking mechanism;

[0007] The magnetic locking mechanism includes an electromagnetic component and a blocking component, the blocking component is made of magnetic material, and an elastic component is provided between the electromagnetic component and the blocking component. When the electromagnetic component is energized, the blocking component is adsorbed by the electromagnetic component inside the magnetic locking mechanism, and at the same time, the blocking component is separated from the guide locking mechanism; when the electromagnetic component is de-energized, the blocking component is clamped in the guide locking mechanism under the reaction force of the elastic component, and limits the downward movement of the first plate.

[0008] Preferably, the guide locking mechanism is a rack, and the rack is helical with the tooth grooves facing downwards.

[0009] Preferably, the guide locking mechanism comprises a guide column, and a plurality of equidistantly distributed grooves are provided on the inner side of the guide column.

[0010] Preferably, the blocking component is a hook hinged inside the magnetic locking mechanism, the end of the hook can fit with the rack, and when the rack cooperates with the hook, the first plate is restricted from moving downward.

[0011] Preferably, the first driving mechanism comprises a first driving motor mounted on the supporting base, and the first driving motor drives the first plate to move up and down along the supporting rod through a screw transmission mechanism.

[0012] Preferably, the elastic component is a spring and is made of non-magnetic material.

[0013] Preferably, a sensor for measuring the position of the platform is installed on the support base.

[0014] Preferably, the first plate of the support base and the support platform are both square structures, the support rods are evenly distributed on the corners of the support base, and the guide rods are evenly distributed on the end surface of the first plate.

[0015] The beneficial effects of the present application include: the present application maintains the free up and down movement of the first plate through unidirectional movement and reverse control when power is on, locks the position of the first plate when power is off, and locks the lifting mechanism, which can prevent the platform from falling due to the weight of the supporting platform while reducing electromagnetic interference, thereby improving the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that components and elements are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the structure of this application;

[0018] Figure 2 This is a perspective view of the magnetic locking mechanism assembly of this application. DETAILED DESCRIPTION

[0019] In order to enable technicians in this technical field to better understand the technical solution of the present application, the present invention is further described in detail below in conjunction with the accompanying drawings and the best embodiment. It should also be noted that for the sake of ease of description, only the parts related to the present invention are shown in the accompanying drawings.

[0020] Example

[0021] like Figure 1 As shown, it includes a support base 1 for ionizing radiation testing, and a lifting device 2 installed on the support base 1, and a support platform 3 for mounting the object to be tested is installed on the top of the lifting device 2; the lifting device 2 includes: a plurality of support rods 10 with one end fixed to the upper end surface of the support base 1 and a fixed plate 4 fixedly installed on the other end; a first flat plate 5 is slidably installed on the support rod 10, and a plurality of guide rods 11 are fixedly installed on the upper end surface of the first flat plate 5, and the other end of the guide rod 11 is fixed to the lower end surface of the support platform 3;

[0022] The support base 1 is provided with a first driving mechanism for driving the first plate 5 to move along the support rod 3;

[0023] A guide locking mechanism 6 is provided between the support base 1 and the fixed plate 4, and a magnetic locking mechanism 7 is provided on the upper end surface of the first flat plate 5 in a position matching the guide locking mechanism 6;

[0024] The magnetic locking mechanism 7 includes an electromagnetic component 8 and a blocking component 9. The blocking component 9 is made of magnetic material, and an elastic component 13 is provided between the electromagnetic component 8 and the blocking component 9. When the electromagnetic component 8 is powered on, the blocking component 9 is adsorbed by the electromagnetic component 8 inside the magnetic locking mechanism 7, and at the same time, the blocking component 9 is separated from the guide locking mechanism 6; when the electromagnetic component 8 is powered off, the blocking component 9 is clamped in the guide locking mechanism 6 under the reaction force of the elastic component 13, and limits the downward movement of the first plate 5. The guide locking mechanism 6 is a rack, and the rack is a helical tooth with the tooth groove facing downward. The guide locking mechanism 6 includes a guide column, and a plurality of equally spaced grooves are provided on the inner side of the guide column. The elastic component 13 is a spring and is made of non-magnetic material.

[0025] The blocking component 9 is a hook hinged inside the magnetic locking mechanism 7, the end of the hook can fit with the rack, and when the rack and the hook cooperate, the first plate 5 is restricted from moving downward.

[0026] The first driving mechanism includes a first driving motor 12 mounted on the supporting base 1 . The first driving motor 12 drives the first plate 5 to move up and down along the supporting rod 10 through a screw transmission mechanism.

[0027] A sensor for measuring the position of the platform 3 is installed on the support base 1 .

[0028] The first plate 5 of the support base 1 and the support platform 3 are both square structures. The support rods 10 are evenly distributed at the corners of the support base 1 , and the guide rods 11 are evenly distributed at the end surface of the first plate 5 .

[0029] In some embodiments of the present disclosure, when the electromagnetic component 8 is energized, the blocking component 9 is adsorbed by the electromagnetic component 8 inside the magnetic locking mechanism 7, and the first drive motor 12 drives the first plate 5 to move up and down. The drive motor is arranged on the upper end surface of the support base 1, and drives the lead screw to rotate through the commutator. The first plate 5 is provided with a ball transmission component or a thread transmission component for cooperating with the lead screw. When it moves to the specified position, the power supply is cut off. The first drive motor 12 and the electromagnetic component 8 use the same power supply. When the power supply is cut off, the electromagnetic force of the electromagnetic component 8 disappears immediately, and the blocking component 9 is clamped in the guide locking mechanism 6 under the reaction force of the elastic component 13; wherein, the tooth position of the rack and the hook covers the specified position for testing.

[0030] In some embodiments of the present disclosure, the guide locking mechanism 6 includes a guide column, and a plurality of equally spaced grooves are provided on the inner side of the guide column. The grooves are used to cooperate with the hook claws, and the positions of the grooves are designated positions for testing.

[0031] It should be understood by those skilled in the art that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above invention, and these changes or modifications are still within the scope of the present invention.

Claims

1. A power-off locking lifting device for ionizing radiation testing, comprising a support base (1) for ionizing radiation testing, and a lifting device (2) mounted on the support base (1), wherein a support platform (3) for mounting a test object is mounted on the top of the lifting device (2); characterized in that: The lifting device (2) comprises: a plurality of support rods (10) with one end fixed to the upper end surface of the support base (1) and the other end fixedly mounted with a fixing plate (4); a first flat plate (5) is slidably mounted on the support rods (10), a plurality of guide rods (11) are fixedly mounted on the upper end surface of the first flat plate (5), and the other end of the guide rods (11) is fixed to the lower end surface of the support platform (3); The support base (1) is provided with a first driving mechanism for driving the first plate (5) to move along the support rod (10); A guide locking mechanism (6) is provided between the support base (1) and the fixed plate (4), and a magnetic locking mechanism (7) is provided on the upper end surface of the first flat plate (5) in a position cooperating with the guide locking mechanism (6); The magnetic locking mechanism (7) comprises an electromagnetic component (8) and a blocking component (9), wherein the blocking component (9) is made of magnetic material, and an elastic component (13) is provided between the electromagnetic component (8) and the blocking component (9); when the electromagnetic component (8) is powered on, the blocking component (9) is adsorbed by the electromagnetic component (8) inside the magnetic locking mechanism (7), and at the same time, the blocking component (9) is separated from the guide locking mechanism (6); when the electromagnetic component (8) is powered off, the blocking component (9) is clamped in the guide locking mechanism (6) under the reaction force of the elastic component (13), and restricts the first plate (5) from moving downward; the elastic component (13) is a spring and is made of non-magnetic material; A sensor for measuring the position of the platform (3) is installed on the support base (1); When the electromagnetic component (8) is energized, the blocking component (9) is adsorbed by the electromagnetic component (8) inside the magnetic attraction locking mechanism (7), and the first drive motor (12) drives the first plate (5) to move up and down. The drive motor is arranged on the upper end surface of the support base (1) and drives the lead screw to rotate through the commutator. The first plate (5) is provided with a ball transmission component or a thread transmission component for cooperating with the lead screw. When the plate moves to a specified position, the power supply is cut off. The first drive motor (12) and the electromagnetic component (8) use the same power supply. When the power supply is cut off, the electromagnetic force of the electromagnetic component (8) disappears immediately, and the blocking component (9) is clamped in the guide locking mechanism (6) under the reaction force of the elastic component (13); wherein the tooth position of the rack and the hook claw covers the specified position for testing; The guide locking mechanism (6) is a rack, and the rack has helical teeth with the tooth grooves facing downwards; The first driving mechanism comprises a first driving motor (12) mounted on the supporting base (1), and the first driving motor (12) drives the first plate (5) to move up and down along the supporting rod (10) through a screw transmission mechanism.

2. The power-off locking lifting device for ionizing radiation testing according to claim 1, characterized in that: The guide locking mechanism (6) comprises a guide column, and a plurality of grooves distributed at equal distances are arranged on the inner side of the guide column.

3. The power-off locking lifting device for ionizing radiation testing according to claim 1, characterized in that: The blocking component (9) is a hook hinged inside the magnetic locking mechanism (7), the end of the hook can fit with the rack, and when the rack cooperates with the hook, the first plate (5) is restricted from moving downward.

4. The power-off locking lifting device for ionizing radiation testing according to claim 1, characterized in that: The first plate (5) of the support base (1) and the support platform (3) are both square structures, the support rods (10) are evenly distributed at the corners of the support base (1), and the guide rods (11) are evenly distributed on the end surface of the first plate (5).

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